Automatic threading-machine



H. OSSWALD AUTOMATIC THREADING MACHINE.

APPLICATION HLED NOV. 29, I919- PatentedSept. 20, 1921 2 SHEETS-SHEET 1.

H. OSSWALD.

AUTOMATIC THREADING MACHINE.

APPLICATION FILED NOV. 29,1919.

Patented Sept. 20,1921.

2 SHEETS--SHEET 2.

Ill

H I l l i UNITED STATES PATENT OFFICE.

HERMAN OSS WALD, OF- RICHMOND HILL, YORK.

AUTOMATIC TEREADING-MACHINE.

Application filed November 29, 1919. Serial No. 841,421.

To all whom it may concern: I

Be it known that I, HERMAN OSSWALD, citizen of the United States, and resident of Richmond Hill, in the county of Queens and State of New York, have invented certain new and useful Improvements in Automatic Threading-Machines, of which the following is a specification.

This invention relates to automatic threading machines. The object of the invention is to provide an automatic machine for threading caps such as are used on fruit jars, cold cream jars, oil cans, bottles and the like. One object of the invention is to provide a threading machine of generally improved construction. .Another object is to provide a threading machine with an automatic feed so as to increase the output of the machine andeliminate dangers incidental to hand feeding. Other objects will appear as this specification proceeds. Accordingly my invention is embodied in an automatic threading machine arranged, designed and constructed as hereinafter set forth while reference is had to the accompanying drawings in which- Figure 1 is a side elevation of an automatic threading machine embodying the invention with parts omitted and parts broken away.

Fig. 2 is a partial end view of the machine looking in the direction of arrow 2 in Fig; 1.

Fig. 3 is a view of a modified form of knock out mechanism.

Fig. 4 is a sectional view of the machine takenon the line 44 of Fig. 1.

Fig. 5 is a view of the lower end ofthe automatic feed chute.

Fig. 6 is a sectional view on-the line 6-6 of Fig. 5.

Fig. 7 is a plan view of Fig. 5.

Fig. 8 shows one type of a cap adapted to be fed automatically to the machine.

Fig. 9 isa sectional detail view on line 9-9 of Fig. 4.

Fig. .10 is a sectional detail view on line 10-10 of Fig. 4.

Referring to the drawings the several parts of the machine are mounted upon a suitable frame 10 which in turn rests on legs 11, 11. The frame forms three alined bearings 12, 13 and 14 in which the ma1n driving shaft 15'is journaled. Any suitable means, not shown, may be employed to drive the main shaft. The main frame also forms two el ned be g 6 and 17 for the mimprovements in' ception of the fixed die shaft 18. Motion 1s mparted to the die shaft 18 from the main shaft 15 by means of two intermeshmg gears 19 and 20. The die shaft carries and drives the fixed die 191 which may be of any type and size required for the threadmg of the particular cap 21.

The threading of the cap takes place between the two cooperating dies, one of which is preferably stationary and receives the cap to be threaded, while the other die is movable and is adapted tobe brought into contact with the fixed die. The cap is then threaded between the dies by rotating the latter in opposite directions. The terms fixed and movable dies employed herein and 26- and which in turn is driven from the main shaft 15 by a gear 27. The bearing.

23 for the die shaft and the bearing 28 for the stud shaft are both part of the rocker arm which comprises the branches 29 and 30 to the one side, see Fig. 2, and an arm or branch 32 to the other side in line with the branch 30. The said arms or branches are part of the rocker arm sleeve 33 which is preferably journaled on trunnions (not shown) instead of being pivoted directly on the main shaft so as to relieve the latter from the operating pressure on the rocker arm as will hereinafter appear. The main shaft extends through the rocker arm sleeve 33.

In order to bring the movable die into operative relationship with the fixed die, the rocker arm is operated by a toggle mechanism thus insuring smooth threads of uniform depth. Referring more particularly to Fig. 4 the numeral 35 denotes a cam shaft carrying the rockercam 36 upon which runs a cam roll 37 carried by the slotted cam rod or member 38. The latter is pivoted at 54 36. The rod 45'is pivoted to the toggle at 48. 49 is a stop on the toggle adapted'to come to rest upon the pads 50 on the frame.

The cam shaft 35 is driven from the main shaft 15 by gears 27, 51, 52 and 53. 55 1s a clutch to couple the shaft 35 to the gear 53 as will be understood. The clutch is operated by a treadle 56. Fig. 4 illustrates the parts in position when the treadle is depressed and the cam roll 37 is on the high part of the cam 36, when it will be seen, that the toggle 42-43 is straightened out against the tension of the spring 46 and the movable die is brought into engagement or co- 0 eration with the fixed chuck and the t reading is done. The dies operate on the cap so long as the cam roll 37 is on the high.

part of the cam 36 and in order to lengthen said an of the cam an auxiliary cam 60 may e adjusted as shown. It wi 1 further be noted that the pressure on the rocker arm by means of the toggle is applied directly in the plane of said rocker arm 32-30 so as to eliminate torsional strains.

When the threading operation is completed, the cap is removed from the lower die by means of a knock out mechanism which comprises a knock out rod 61 mounted to slide axially within the bearings 16 and 17 and the die 191. The rod 61 is reciprocated by means of the pivoted lever 62 which carries a cam roll 63 operated by a cam 64. A spring 65 within the bearing 17 keeps the roll on the cam.

When a cap 66 of the type shown in Fig. 3 is operated on, that is a cap without a center portion, the knock out mechanism may comprise a sleeve 67- adapted to engage the flange 68 of the cap. The sleeve is operated by a fork 69 on a rod 70 connected to the knock out rod 61 by an arm 71. In this instance a spring 72 may be used to keep the cam roll 63 on the cam 64.

While the caps may be placed on the die 191 by hand the output of the machine is reatly increased and accidents eliminated y using an automatic feed as hereinafter described. To this end there is provided a feed chute 75 comprising a side 7 6, a bottom 77 and a back 78, see Figs. 4 to 7. The back is out down as at 79 so as to facilitate bringing the feed chute as close to the die 191 as possible. The side 76 is preferably terminated as at 80 and an adjustable mouth piece 81 is employed to adjust the size of the feed openin 82. The caps 21 are piled into the chute rom the upper end thereof with the.

o ening of the cap toward the side 76, Fig. 6.

e caps roll down the chute by gravity during the operation of the machine. In order to prevent the caps from jumpin out of the chute a top bar 83 may be place on top of the caps and fastened with screws 84 which move in the slots 85 in the back 78 so as to adjust the height of the chute to suit the size means of a swivel block 112 which is screwed into the chute bottom 77 as at 110. Through the swivel block passes a bolt which is adj ustably secured in the slot 91 of the bracket 92 by means of nuts 113, 113. 111 is a spacing collar between the swivel block and the bracket. The chute is operated by a lever 93 pivoted to a swivel block 120 by a pin 94. The swivel block 120 is journaled on the frame 10 by a stud 121. The connection between the chute and the lever is as follows: 95 is a bolt which may be adjusted in the slot 96 in the piece 125 secured to the chute and in the slot 97 in the lever by means ofv nuts 117, 117 operating against suitable washers as 115 and 116. 114 is a-journal block in the slot 96 which permits of a rocking, oscillating and swinging motion of the chute with respect to the lever 93, while a similar play or free motion is permitted the lever 93 between the one washer 115 and the washer 116. The lever carries a cam roll 98 which runs on the placing cam 99 and also carries another cam roll 100 which runs on the positioning cam 101. The two cams may be in one piece or are secured togetheras shown-and fixed to the shaft 35. A spring 103 keeps the roll 100 on the cam 101.

The operation is as follows :-The chute or magazine 75 is filled with caps 21 as shown and this work is kept up during the operation of the machine. As the to of the chute extends away from the machine this work may be done without danger to the operator.

Wh n the treadle is depressed the entire machine starts working and the timing of the cams is such that by means of the positioning cam 101 the chute is moved in a vertical plane toward and away from the die 191 and simultaneously therewith, by means of the placing cam 99 the mouth of the chute is moved laterally to place the cap on the said die. This double movement of the chute is curvilinear and is accomplished through the cooperation of the swivel pivots 90 and 95, the pivoted lever 93, the cam rolls 98 and 100, and the cams 99 and 101.

The parts are shown in the drawings at the moment when the dies are together threading the cap. The chute has been lowered from the fixed die by a downward swinging motion in a place at right angles to the axis of the die, the chute then movlng about the center of pivot 90 and withdrawing from the cap placed on the die and while the cap is being threaded, .the chuteafter the said swinging downward movement then moves sidewise awa from the die, then up- -ward in line with t e'die, then toward the caps slide down therein by gravity and the Y threading of the cap on thedie is accomplished. The rocker arm moves back by breaking the tog le and the knock out pushes the finished cap EIOID the die and it falls to the ground or into a suitable receptacle.

The slots in the chute bracket, .the chute and the lever 93 provide sufiicient adjustment for the operation of the chute and the adjustment of the cams 36 and 60 is sufficient to thread the cap properly.

'Besides operating on caps such as are shown in Fig. 1, the machine will feed automatically caps such as are shown in Fig. 8, where it will be noted that it makes no difference how the flange of the caps happen to lie in the chute because the caps are not fed to the die laterally with respect to each other or sidewise from the chute, which would be impossible with the caps shown in Fig. 8 because the flange on the cap to be fed might not be in front of the succeedin cap flange. But-inasmuch as the chute slides or is drawn downwardly away from the cap in the plane of the latter, most any type of cap may be fed automatically by means of the chute shown and described. It will be seen that when the chute is filled with caps as in Fig. 8, the first cap to be placed on the die 191 has its flange in front of the succeeding caps, consequently said first cap is placed on the die, after which the chute by its downward movement withdraws from said first cap which is thus left on the die.

On the second movement of the chute it places the second or middle cap in'Fig. 8 on the die 191 when of course the flange of the third cap will be between the face of the die and the flange of the second cap, this, however, presents no difliculty, because only a small sector of said third cap flange is thus caught between the middle cap and the die, and the lowering movement of the chute will carry saidthird cap away from the die and leave the middle cap on the die, it being of course understood that the feed opening of the chute has been adjusted to permit the caps in Fig. 8 to pass sidewise out of the chute and onto the die.

It will further be understood that I do not intend to limit myself to the exact disclosure herein, but that changes may be made within the principle of the invention and the scope of the appended claims.

I claim I 1. In a cap threading machine in combination a pair of cooperating dies, a pivoted receptacle adapted to receive .a plurality of caps to be threaded, means for operating said receptacle on its pivot to position a cap upon one of the said dies and means for operating the latter.

2. In a cap threading machine .in combination a fixed die, a movable die adapted to cooperate therewith, a pivoted receptacle adapted to receive a plurality of caps to be threaded, means for operating thesaid receptacle on its pivot to position acap upon the said fixed die and means for rotating the said dies.

3. In a cap threading machine in combiation a pair of cooperating dies, a pivoted receptacle adapted to receive the caps to be threaded, said receptacle having a feed opening, means for supporting said receptacle in a position to permit said caps to travel toward said feed opening by gravity,

means. for operating said receptacle on its' pivot to automatically position a cap from the said feed opening and upon one of the said dies and means for operating the latter.

4. In a cap threading machine in combination a pair of cooperating dies, a receptacle for receivin the caps to be threaded, said receptacle aving a feed opening, means for supporting said receptacle in a position to permit said caps to travel therein toward said feed opening, automatic means for operating said receptacle to position a cap from said feed opening and upon one of the said dies, automatic means for removing the threaded cap from the said one die and means for rotating the dies.

5. In a cap threading machine in combi nation a. fixed die, a movable die, a receptacle adapted to receive the caps to be threaded, said receptacle having a feed opening, means permitting the caps in said receptacle to travel toward said feed opening by' gravity, means for operating said receptacle to automatically place a cap from said feed opening and upon the said fixed die and means for rotating the dies.

6. In a cap threading machine in combination a pair of cooperating dies, a pivoted receptacle for receiving a plurality of caps to be threaded, means for adjusting the said receptacle to receive a given size cap, means for operating the said receptacle on its pivot to position a cap upon one of the dies and means for operating the latter.

7. The combination of a pair of dies, means for operating the same to thread caps, a receptacle for containing a plurality of caps to be threaded, a lever pivoted to the said receptacle and cams for operating said lever to actuate the said receptacle to autoniatically position the caps upon one of the said dies.

8. In a cap threading machine in combina tion a pair ofcooperating dies, means adapted to receive a plurality of caps to be thread ed, said means having a cap outlet and mechfrom the cap and die.

anism' for operating said cap receiving means to impart a curvilinear movement to the outlet thereof whereby to position a cap upon one of the said dies.

9. In a cap threading machine in combination a air of cooperating dies, a receptacle adapted to receive a plurality of caps to be thieaded, said receptacle having a cap outlet and mechanism for operating said receptacle whereby to impart a curvilinear movement to the outlet thereof to position a cap upon one of the said dies.

10. In a cap threading machine in combination a pair of cooperating dies, 3. receptacle adapted to receive a plurality of caps and provided with a cap outlet and means for operating said receptacle to place a cap upon one of said dies, said means operating by a curvilinear movement toward an away from the said die.

11. In a cap threading machine in combination a die, means for supporting a cap to be threaded upon said die, means for operating said supporting means to place the ca 11 on said die and to withdraw from said die by a movement in a plane perpendicular to the axis of the die after the cap has been placed upon the same. I 12. In'a cap threadin machine in combination a die, a receptac e for receivin the caps to be threaded, said receptacle having a cap outlet and mechanism for imparting a curvilinear movement to said receptacle whereby to cause the same to place a cap upon said die and to remove thevcap from the receptacle by the latter withdrawing 13. In a cap threading machine in combination a die, a receptacle for receiving the caps to be threaded, and means for operatin said receptacle into a position coaxial witl the said die to place a cap thereon and for separating the cap from the receptacle by withdrawing the latter in a directlon at an angle to the axis of the said die.

I means ing said receptac e in a position to permit the caps to travel toward said cap outlet by gravity, means for operating said receptacle to osltion said cap outlet in axial alinement wit one of the-said dies and with the lowermost cap upon the same, said means also serving to operate said receptacle away from said die in a direction other than that re-.

quired for aforesaid.

15. In a cap threading machine in combination a pair of dies a receptacle adapted to receive the caps to "be threaded, supporting means, means for pivotally connecting said receptacle and said supporting means, a lever pivotallfy connected to said receptacle and or actuating said lever toimpart a curvilinear motion to said receptacle to cause the same to place a cap directly upon one of the said dies.

\ 16. The combination with a threading die, of means for placing a cap to be threaded on said'die, said means comprising a receptacle for supporting a cap and mechanism for operating said receptacle in a direction to place the cap upon the said die and for operating said receptacle in a direction at an angle to the first named direction away from said die.

17. In a cap threading machine the combination' of a pair of cooperating dies, a re ceptacle adapted to receive the caps to be threaded and mechanism for operatin said positioning the said outlet as receptacle to place a cap upon one 0 said dies and for moving said receptacle away from thedie after the cap has been placed thereon, said last named movement being in a direction'parallelwith the plane of the top of the cap. g Y

Signed this 24th day of November A. D.

a HERMAN OSSWALD. 

